ListBoxDrawItemEventArgs.State Property

Gets the state of the item being painted.

Namespace: DevExpress.XtraEditors

Assembly: DevExpress.XtraEditors.v20.1.dll

Declaration

public DrawItemState State { get; }
Public ReadOnly Property State As DrawItemState

Property Value

Type Description
DrawItemState

A DrawItemState enumeration member specifying the current state of an item being painted.

Remarks

Access this property to obtain the painted item's state. For example, this can be useful when it is necessary to custom paint items depending on their state. This property value may be a combination of the DrawItemState enumeration members. The members can be combined by use of bitwise operators.

You can also use the event parameter's ListBoxDrawItemEventArgs.Index property to identify the index of the processed item.

Examples

The following sample code handles the BaseListBoxControl.DrawItem event to custom paint odd and even list box items. The event handler also custom paints the currently selected item.

using DevExpress.XtraEditors;

private void listBoxControl1_DrawItem(object sender, DevExpress.XtraEditors.ListBoxDrawItemEventArgs e) {
    Brush evenItemBackBrush = Brushes.WhiteSmoke;
    Brush oddItemBackBrush = Brushes.LightBlue;
    Brush selectedItemBackBrush = Brushes.SteelBlue;
    string itemText = (sender as ListBoxControl).GetItemText(e.Index);
    if ((e.State & DrawItemState.Selected) != 0) {
        e.Cache.FillRectangle(selectedItemBackBrush, e.Bounds);
        using (Font f = new Font(e.Appearance.Font.Name, e.Appearance.Font.Size, FontStyle.Bold)) {
            e.Cache.DrawString(itemText, f, Brushes.White, e.Bounds, e.Appearance.GetStringFormat());
        }
        e.Handled = true;
        return;
    }
    if (e.Index % 2 == 0) {
        e.Cache.FillRectangle(evenItemBackBrush, e.Bounds);
    }
    else {
        e.Cache.FillRectangle(oddItemBackBrush, e.Bounds);
    }
    e.Cache.DrawString(itemText, e.Appearance.Font, Brushes.Black, e.Bounds, e.Appearance.GetStringFormat());
    e.Handled = true;
}
See Also